ETS member sets

Member sets allow you to partition the members of the PSObject object into two subsets so that the members of the subsets can be referenced together by their subset name. The two types of subsets include property sets and member sets. For example of how PowerShell uses member sets, there is a specific property set named DefaultDisplayPropertySet that is used to determine, at runtime, which properties to display for a given PSObject object.

Property Sets

Property sets can include any number of properties of a PSObject type. In general, a property set can be used whenever a collection of properties (of the same type) is needed. The property set is created by calling the PSPropertySet(System.String,System.Collections.Generic.IEnumerable{System.String}) constructor with the name of the property set and the names of the referenced properties. The created PSPropertySet object can then be used as an alias that points to the properties in the set. The PSPropertySet class has the following properties and methods.

• IsInstance property: Gets a Boolean value that indicates the source of the property.
• MemberType property: Gets the type of properties in the property set.
• Name property: Gets the name of the property set.
• ReferencedPropertyNames property: Gets the names of the properties in the property set.
• TypeNameOfValue property: Gets a PropertySet enumeration constant that defines this set as a property set.
• Value property: Gets or sets the PSPropertySet object.
• PSPropertySet.Copy method: Makes an exact copy of the PSPropertySet object.
• PSMemberSet.ToString method: Converts the PSPropertySet object to a string.

Member Sets

Member sets can include any number of extended members of any type. The member set is created by calling the PSMemberSet(System.String,System.Collections.Generic.IEnumerable{System.Management.Automation.PSMemberInfo}) constructor with the name of the member set and the names of the referenced members. The created PSPropertySet object can then be used as an alias that points to the members in the set. The PSMemberSet class has the following properties and methods.

• IsInstance property: Gets a Boolean value that indicates the source of the member.
• Members property: Gets all the members of the member set.
• MemberType property: Gets a MemberSet enumeration constant that defines this set as a member set.
• Methods property: Gets the methods included in the member set.
• Properties property: Gets the properties included in the member set.
• TypeNameOfValue property: Gets a MemberSet enumeration constant that defines this set as a member set.
• Value property: Gets the PSMemberSet object.
• PSMemberSet.Copy method: Makes an exact copy of the PSMemberSet object.
• PSMemberSet.ToString method: Converts the PSMemberSet object to a string.